JAJSIO4 データシート

JAJSIO4A February 2020 – September 2020 TPS546A24A

PRODUCTION DATA

パッケージ・オプション

7.6.47 (58h) VIN_UV_WARN_LIMIT

CMD Address	58h
Write Transaction:	Write Word
Read Transaction:	Read Word
Format:	SLINEAR11 per CAPABILITY
Phased:	Yes
NVM Back-up:	EEPROM
Updates:	On-the-fly

The Section 7.6.47 command sets the value of the PVIN pin voltage, in volts, that causes the input voltage detector to indicate an input undervoltage warning.

The Section 7.6.47 is a phase command, each phase within a stack will independently detect and report input undervoltage warnings.

In response to an input undervoltage warning condition, the TPS546A24A takes the following action:

Set the NONE OF THE ABOVE bit in the STATUS_BYTE.
Set the INPUT bit in the STATUS_WORD.
Set the VIN_UVW bit in the STATUS_INPUT register.
Notify the host per PMBus 1.3.1 Part II specification, section 10.2.

Figure 7-53 (58h) VIN_UV_WARN_LIMIT Register Map

15	14	13	12	11	10	9	8
RW	RW	RW	RW	RW	RW	RW	RW
VINUVW_EXP					VINUVW_MAN

7	6	5	4	3	2	1	0
RW	RW	RW	RW	RW	RW	RW	RW
VINUVW_MAN

LEGEND: R/W = Read/Write; R = Read only

Table 7-64 Register Field Descriptions

Bit	Field	Access	Reset	Description
15:11	VINUVW_ EXP	RW	11110b	Linear format two’s complement exponent
10:0	VINUVW_ MAN	RW	NVM	Linear format two’s complement mantissa

The default Section 7.6.47 is 2.5 V. The programmable range for Section 7.6.47 is 5 V - 22 V. If Section 7.6.47 is programmed above 5 V, Section 7.6.47 cannot be reprogrammed below 5 V.

Attempts to write Section 7.6.47 to any value outside those specified as valid will be considered invalid/unsupported data and cause the TPS546A24A to respond by flagging the appropriate status bits and notifying the host according to the PMBus 1.3.1 Part II specification section 10.9.3.

パッケージ・オプション

メカニカル・データ（パッケージ｜ピン）

サーマルパッド・メカニカル・データ

発注情報

7.6.47 (58h) VIN_UV_WARN_LIMIT